Which one of the following statement is false in respect of flowering plants?

1. Parthenocarpy can be induced through the application of growth hormones
2. Integuments encircle the ovule except at the tip where a small opening called the germ pore is organized
3. Endosperm development precedes embryo development
4. Apomicts have several advantages in horticulture and agriculture

Subtopic:  Pistil: Ovule |
 75%
From NCERT
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To form four fully developed Polygonum type of embryosacs in angiosperms total number of meiosis and mitosis divisions generations required are :-

1. 4, 12

2. 1, 3

3. 4, 4

4. 1, 12

Subtopic:  Pistil: Female Gametophyte |
 51%
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Megaspore mother cell differentiates from

1. Nucellus in the micropylar region.

2. Nucellus in the chalazal region.

3. Primary parietal cell in chalazal region.

4. Integument cell in micropylar region.

Subtopic:  Pistil: Female Gametophyte |
 78%
From NCERT
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A plant breeder employ technique of emasculation

1. To cover the flower with a bag
2. To prevent self-pollination
3. To prevent stamen from being contaminated
4. To produce female plant

Subtopic:  Pollination & Outbreeding Devices |
 79%
From NCERT
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Which of the following has proved helpful in preserving pollens as fossils?

1. Pollen kit

2. Cellulosic intine

3. Oil content

4. Sporopollenin

Subtopic:  Stamen: Male Gametophyte |
 92%
From NCERT
NEET - 2018
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Winged pollen grains are present in:

1 Mustard
2. Cycas
3. Mango
4. Pinus

Subtopic:  Pollination & Outbreeding Devices |
 54%
NEET - 2018
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Pollen grains can be stored for several years in liquid nitrogen having a temperature of:

1. –120 °C 2. –80 °C
3. –196 °C 4. –160 °C
Subtopic:  Stamen: Male Gametophyte |
 95%
From NCERT
NEET - 2018
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Double fertilization is:
1. Fusion of two male gametes of a pollen tube with two different eggs
2. Fusion of one male gamete with two polar nuclei
3. Fusion of two male gametes with one egg
4. Syngamy and triple fusion
Subtopic:  Double Fertilization |
 84%
From NCERT
NEET - 2018
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Which one of the following plants shows a very close relationship with a species of moth, where none of the two can complete its life cycle without the other?

1. Hydrilla 2. Yucca
3. Banana 4. Viola
Subtopic:  Pollination & Outbreeding Devices |
 93%
From NCERT
NEET - 2018
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Double fertilization is exhibited by:

1. Algae

2. Fungi

3. Angiosperms

4. Gymnosperms

Subtopic:  Double Fertilization |
 92%
From NCERT
NEET - 2017
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